@InProceedings{blum:LIPIcs.IPEC.2019.4,
  author =	{Blum, Johannes},
  title =	{{Hierarchy of Transportation Network Parameters and Hardness Results}},
  booktitle =	{14th International Symposium on Parameterized and Exact Computation (IPEC 2019)},
  pages =	{4:1--4:15},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-129-0},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{148},
  editor =	{Jansen, Bart M. P. and Telle, Jan Arne},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.IPEC.2019.4},
  URN =		{urn:nbn:de:0030-drops-114656},
  doi =		{10.4230/LIPIcs.IPEC.2019.4},
  annote =	{Keywords: Graph Parameters, Skeleton Dimension, Highway Dimension, k-Center}
}